Price is indeed the determining factor for both supply and demand. When the price of a product or service increases, the quantity supplied by producers also tends to increase as they are motivated to supply more at higher prices. On the other hand, when the price decreases, the quantity supplied decreases as well. Similarly, when the price of a product or service increases, the quantity demanded by consumers tends to decrease as they are less willing or able to purchase at higher prices. Conversely, when the price decreases, the quantity demanded increases. Therefore, price plays a crucial role in influencing both supply and demand in the market.